I cannot save image using nsuserdefaults and crash my app and I also used custom class UserInfo which used
-(void)encodeWithCoder:(NSCoder *)encoder
{
NSData *imageData = UIImagePNGRepresentation(categoryImage);
[encoder encodeObject:categoryName forKey:@"name"];
[encoder encodeObject:imageData forKey:@"image"];
}
-(id)initWithCoder:(NSCoder *)decoder and userInfo.categoryImage is UIImage variable.
reason: '-[UIImage encodeWithCoder:]: unrecognized selector sent to instance 0x7676a70'
userInfo = [[UserInfo alloc] init];
userInfo.categoryName = categoryName.text;
NSLog(@"Category Name:--->%@",userInfo.categoryName);
userInfo.categoryImage = image;
appDelegate.categoryData = [[NSMutableDictionary dictionaryWithObjectsAndKeys:
userInfo.categoryName, @"name",userInfo.categoryImage,@"image", nil] mutableCopy];
[appDelegate.categories addObject:appDelegate.categoryData];
NSLog(@"Category Data:--->%@",appDelegate.categories);
[appDelegate.categories addObject:userInfo.categoryName];
[appDelegate.categories addObject:userInfo.categoryImage];
[self saveCustomObject:userInfo.categoryName];
[self saveCustomObject:userInfo.categoryImage];
-(void)saveCustomObject:(UserInfo *)obj
{
appDelegate.userDefaults = [NSUserDefaults standardUserDefaults];
NSData *myEncodedObject = [NSKeyedArchiver archivedDataWithRootObject:obj];
[appDelegate.userDefaults setObject:myEncodedObject forKey:@"myEncodedObjectKey"];
}
So Please help me how can i store and retrieve uiimage using nsusedefaults???
如果您是我,我将UIImage保存到文件中(使用[myImage hash];生成文件名),然后使用NSUserDefault ;-)将文件名另存为NSString。
UIImage does not implement NSCoding protocol, this is why you have the error.
Store:
NSData* imageData = UIImagePNGRepresentation(image);
NSData* myEncodedImageData = [NSKeyedArchiver archivedDataWithRootObject:imageData];
[appDelegate.userDefaults setObject:myEncodedImageData forKey:@"myEncodedImageDataKey"];
}
Restore:
NSData* myEncodedImageData = [appDelegate.userDefaults objectForKey:@"myEncodedImageDataKey"];
UIImage* image = [UIImage imageWithData:myEncodedImageData];
Image Save on NSUserDefaults :
[[NSUserDefaults standardUserDefaults] setObject:UIImagePNGRepresentation(image) forKey:@"image"];
Image retrieve on NSUserDefaults:
NSData* imageData = [[NSUserDefaults standardUserDefaults] objectForKey:@"image"];
UIImage* image = [UIImage imageWithData:imageData];
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